[BUG] Traefik v3 breaks calibre-web UI

[zaggash]

Is there an existing issue for this?

• I have searched the existing issues

Current Behavior

All JS Jquery are not working.

The most obvious issues are the dropdown menu which are not working.
Or the "+" menu in the admin area are not opening.

• I paid attention to https://doc.traefik.io/traefik/master/migration/v2-to-v3/
• I tried to add back this option with this middleware: https://doc.traefik.io/traefik/master/migration/v2-to-v3/#content-type-auto-detection
  It didn't change anything.

If anyone has an idea !

Expected Behavior

The dropdown menu should open a show options
The "+" menus in the admin area should expand

Steps To Reproduce

Add traefik v3 in front of calibre web.

Environment

- OS: Unraid
- How docker service was installed: docker compose with traefik as reverse.

CPU architecture

x86-64

Docker creation

https://github.com/zaggash/homelab/blob/main/unraid-homelab/media/calibre-web-compose.yaml

Container logs

No log in the container.

[github-actions]

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[j0nnymoe]

Hey @zaggash long time no speak 😊.
You need to report this to calibre web or it's a problem with your traefik config, if it's working fine without traefik, it's not something we need to change in the container.

[zaggash]

Hello :)
Yup I agree, opened here in case it happens to someone.
I'll cross post upstream.

[zaggash]

My bad after further testing, it seems to be something in my config.
I'll dig further and report here the wrong setup

[zaggash]

For some reason the compression is causing issues in this version:

middlewares:
    compress-all:
      compress:
        excludedContentTypes:
          - text/event-stream

Closing !

[zaggash]

For tracking purpose
Maybe traefik/traefik#9734 ?

[danepowell]

I don't think traefik/traefik#9734 is the whole story, since I'm on v3.0.2 (supposedly fixed) and still seeing the issue.

I first noticed the menu dropdown not working on mobile after upgrading to Traefik v3 and traced it back to all the JS files served by calibre-web being just 1 byte (a semicolon).

#294 (comment) didn't fix it for me. I had to disable the compress middleware altogether.

[zaggash]

Yup.
Mee too.
I pasted the config here.
But I had to disable the compress middleware completely.

[danepowell]

Yeah, I had to apply a custom middleware to the calibre service to disable compression. Definitely still a bug in traefik and/or calibre though.